package JDBC;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.Statement;

/**
 * 执行UPDATE语句
 */
public class JDBCDemo3 {
    public static void main(String[] args) {
        //需求：将id为1的用户的密码，昵称，年龄进行修改
        try {
            Class.forName("com.mysql.cj.jdbc.Driver");
            Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true", "root", "root");
            System.out.println("连接成功");
            Statement statement = connection.createStatement();
            String sql = "UPDATE user "+
                         "SET password = '666666', nickname = '老三', age = 50 "+
                         "WHERE id = 1 ";
            int num = statement.executeUpdate(sql);
            if (num>0){
                System.out.println("修改成功");
            }else {
                System.out.println("修改失败");
            }
            connection.close();
        } catch (Exception e) {
            e.printStackTrace();
        }


    }
}
